ClassFicationCode='1006'
"""
type trade data type (default = C) Valid values:
C Commodities (merchandise trade data)
S Services (trade in services data)
"""
Type='C'
"""
max maximum records returned (default = 1000) A valid integer in the range (Guest: [1, 100000],
 Authenticated: [1, account limit*], NOTE: Maximum limit is 250,000). 
 If the number of records returned by the query exceed max results are truncated to this number. In output types supporting metadata (e.g. json) information about the total number of records that would have been returned is included.
"""
Max='1000'
"""
px classification (default values are HS for goods and EB02 for services): Trade data classification scheme. See list of valid classifications:

HINT: data is not always available in every classification. Availability varies by time period and reporter. A good default is HS, meaning "Harmonized System (HS), as reported", whereas a service default is EB02, meaning "Extended Balance of Payments Services Classification". To see what data is available in different classifications see the data availability section.
WARNING: only older data was submitted to UN Comtrade in SITC. With rare exceptions no data will be returned in queries from 1992 or later if code ST, meaning "Standard International Trade Classification (SITC), as reported" is chosen. If you require data formatted in the SITC classification, it is better to use S1 for SITC Rev. 1 if you would like the longest time series or check the data availability section and use the SITC revision most appropriate for the data you are interested in.
HS Harmonized System (HS), as reported (e.g. if data was originally submitted to UN Comtrade in HS1996 then HS1996 is displayed) (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
H0 HS 1992 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
H1 HS 1996 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
H2 HS 2002 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
H3 HS 2007 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
H4 HS 2012 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
ST Standard International Trade Classification (SITC), as reported (e.g. if data was originally submitted to UN Comtrade in SITC Rev. 1 then SITC Rev. 1 is displayed) (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
S1 SITC Revision 1 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
S2 SITC Revision 2 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
S3 SITC Revision 3 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
S4 SITC Revision 4 (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
BEC Broad Economic Categories (BEC) (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
EB02 Extended Balance of Payments Services Classification (EB02) (full classification code list in JSON, formatted for select2.js, pass "id" to cc parameter)
"""
if Type=='C':
    Px='HS'
else:
    Px='EB02'

"""
start year(default 2000 , min 1961)
end year(default 2021 , min 1961)
format YYYY
"""
start=2000
end=2020

DatabaseUser='root'
DPassword='123456'
DIP='192.168.1.105'
Port='3306'
DB_NAME='undb'
DB_chrset='utf8'